Removing
Attention! Removing the cylinder head must be done on a cold engine.
Attention! If your radio has an anti-theft code, check that you have the pairing codes before disconnecting the battery.
Attention! On models since 1993, the airbag system is disabled if the battery is disconnected for an extended period. If the airbag warning light comes on and stays on after reconnecting the battery, take it to a specialist workshop to restore the system to normal.
1. Remove the ground wire from the battery.
2. Drain the coolant from the cylinder block and radiator.
3. Drain the engine oil and remove the oil filter.
4. Remove the throttle body, fuel injectors and fuel line.
5. Remove the intake manifold.
6. Remove the exhaust manifold.
7. Remove the toothed belt, camshaft pulley and top idler pulley.
8. Remove the rear toothed belt cover.
9. Remove camshafts and pushers.
10. Remove the generator and ignition distributor.
11. Unscrew the power steering pump mounting bolt and move it to the side without disconnecting the hoses from it.
12. Label and disconnect remaining pipes, hoses, cables and wires.
13. Working in reverse order to that shown, loosen the cylinder head bolts 1/3 turn each pass until the bolts are completely loose.
14. Remove the cylinder head.
Installation
1. The mating surfaces of the head and cylinder block must be perfectly clean. Use a hard plastic or wooden scraper to clean them. Be careful when cleaning as aluminum alloy is very easy to damage.
2. Check that carbon deposits do not get into the oil and water channels. This is especially important for the lubrication system, as deposits can block the oil supply to engine components. If necessary, clean the channels, check the mating surfaces of the head and cylinder block for nicks, deep scratches and other damage. If the defects are small, they can be removed by machining, but in case of significant defects, the parts must be replaced.
3. Clean the bolt holes in the cylinder block. Screwing a bolt into an oil-filled hole may rupture the block due to hydraulic pressure.
4. Using a metal ruler and feeler gauge, check the flatness of the mating surfaces.
5. Install a new cylinder head gasket to the dowel pins in the cylinder block.
6. Install the head to the engine block.
7. Lubricate the threads of the cylinder head bolts with a thin layer of engine oil.
8. Install the cylinder head bolts and tighten them to the required torque in several stages in the sequence shown in the figure.
9. Further installation is carried out in the reverse order of removal.
10. Check and, if necessary, adjust the valve clearances.
11. Pour coolant into the cooling system. Install a new oil filter and add engine oil.